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USA | |
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| The Iron Mines of NJ (1910), Bayley:263. |
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| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
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| Cornwall, H.R. (1943) Pahaquarry Copper Mine, USGS Open File Report 45-9 |
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| NJ State Geol. Ann. Rpt. (1900):176. |
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| Rutgers Univ. Bull. #5, Pt 1:26. |
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| NJ State Geol. Ann. Rpt. (1900):176. |
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| NJ State Geol. Ann. Rpt. (1895):40. |
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| David S. Bernstein, October 2009 fieldtrip observations. |
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| Observed David S. Bernstein, February of 2012 |
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| Ex Hobart Jones Collections. Several quartz crystals from this locality were collected by Hobart Jones and are in various NJ Collections. |
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| Rutgers Univ. Bull #5, Pt1:40-41. |
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| warren cummings (2009) |
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| warren cummings (2009)
William Shirley Bayley (1941) Pre-Cambrian geology and mineral resources of the Delaware Water Gap and Easton quadrangles, New Jersey and Pennsylvania. USGS Bulletin 920 |
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| Monteverde, et al. (1989) |
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| The Iron Mines of NJ (1910), Bayley:259. |
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| Warren Cummings, Geologist, NJDOT. |
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| NJ State Geol. Ann. Rpt. (1900):176. |
Columbia, Knowlton Township, Warren County, New Jersey, USA